And he poured of the anointing oil upon Aaron’s head, and anointed him, to sanctify him. Leviticus 8:12 KJV
The anointing sanctifies (sets apart unto God’s service). It is never to be polluted by a sinful life-style. It is never to be taken lightly.
Dead flies cause the ointment of the apothecary to send forth a stinking savour: so doth a little folly him that is in reputation for wisdom and honour. Ecclesiastes 10:1 KJV
It only takes a little folly (a little sin) to corrupt the anointing.
But as he which hath called you is holy, so be ye holy in all manner of conversation; 1 Peter 1:15 KJV